Protective shield



FIG. 1 is a top-front-right perspective view of a protective shield, showing the design;

FIG. 2 is a bottom-front-left perspective view of the protective shield of FIG. 1;

FIG. 3 is a front view of the protective shield of FIG. 1;

FIG. 4 is a right view of the protective shield of FIG. 1;

FIG. 5 is a rear view of the protective shield of FIG. 1;

FIG. 6 is a left view of the protective shield of FIG. 1;

FIG. 7 is a top view of the protective shield of FIG. 1; and,

FIG. 8 is a bottom view of the protective shield of FIG. 1.

The broken lines in the drawings illustrate environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a protective shield, as shown and described. 